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Bio 1500 test 3 (schul) UPDATED ACTUAL Exam Questions and CORRECT Answers $10.49
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Bio 1500 test 3 (schul) UPDATED ACTUAL Exam Questions and CORRECT Answers

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  • Biology 1500
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  • Biology 1500

Bio 1500 test 3 (schul) UPDATED ACTUAL Exam Questions and CORRECT Answers Describe an effective experimental design to determine whether an environmental variable imposes selection on a trait - CORRECT ANSWER - - control constants (temperature, environment, food, etc.) - manipulate independ...

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  • February 19, 2025
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biology 1500
  • Biology 1500
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MGRADES
Bio 1500 test 3 (schul) UPDATED ACTUAL
Exam Questions and CORRECT Answers
Describe an effective experimental design to determine whether an environmental variable
imposes selection on a trait - CORRECT ANSWER - - control constants (temperature,
environment, food, etc.)
- manipulate independent variable(s)
- record dependent variable(s)
- keep control group


Recognize the potential of natural selection to cause dramatic changes in phenotype, e.g. body
size. - CORRECT ANSWER - 1. Phenotypes are a variable in population
2. Offspring have the same/similar phenotype as parents (phenotype is heritable)
3. Survival and reproduction depends on this phenotype
4. Future generation: genetic composition of population changes


Natural Selection - CORRECT ANSWER - One of several "mechanisms of evolution." A
"mechanism of evolution" are processes that cause allele frequency to change.


Population - CORRECT ANSWER - group of individuals that interbreed and reproduce



Phenotype - CORRECT ANSWER - observable traits



Fitness - CORRECT ANSWER - ability to survive and reproduce in an environment



Adaptation - CORRECT ANSWER - trait that increases fitness of an individual with this
trait relative to others without it.


Carbohydrates - CORRECT ANSWER - - Building Block: monosaccharides (carbon,
hydrogen, oxygen) - Monosaccharides: glucose, galactose, fructose

, - Disaccharides: lactose, maltose, sucrose
-Polysaccharides: cellulose, glycogen, starch, chitin


Proteins - CORRECT ANSWER - BB: amino acids
Linked by peptide bonds → long amino acid chain = polypeptide


Lipids - CORRECT ANSWER - - BB: fatty acids and glycerol
-Fats and oils - saturated (solid at room temp; max H+ bond) vs unsaturated (oil/liq): Trans Fats
(hydrogenated PB), omega fatty acids (salmon)
-Waxes
-Phospholipids: Make cellular membranes
-Steroids: Cholesterol; Sterols in plants


Nucleic Acid - CORRECT ANSWER - BB: nucleotides
- DNA & RNA


Relationship between the terms monomer and polymer - CORRECT ANSWER -
Monomers bond to form larger molecules called polymers. A monomer is a single, small
molecule, or molecular fragment.


Hydrolysis - CORRECT ANSWER - Breaks down polymers
-Adds H2O
-Facilitated by enzymes (proteins)


Dehydration - CORRECT ANSWER - Strings monomers together
-removes H2O


Prokaryotes - CORRECT ANSWER - - single celled organisms with no membrane bound
organelles. -DNA is in an unenclosed nucleoid

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